UNAUTHORIZED FINGER:Ares was the biggest asshole god. Murderer, rapist, philanderer and father of mass-murderers Deimos and Phobos, even the Greeks didn't like his ass. He was the god of war, and not in a good way. He was insatiable in battle, and a psycho in peace-time. Zeus, his father didn't even like him. He was a bad god and should feel bad.

Yeah, this. The Greeks had two war gods, really. Athena was the goddess of warfare, per se: strategy, tactics, armies, glory, and the like. Ares was the god of whacking shiat with pointy things until it fell down.

Polytheistic gods tended to all be petty and vengeful. It's how people explained the horrible things that happened in life beyond their control. Hell, even the Old Testament Judeo-Christian god is a raging asshole who advocates genocide.